<template>
  <view class="search-box">
    <uni-search-bar @input="input" :radius="100" cancelButton="none"></uni-search-bar>
    <view class="sugg-list" v-if="searchResults.length!==0">
      <view class="sugg-item" v-for="(item, i) in searchResults" :key="i" @click="gotoDetail(item.goods_id)">
        <view class="goods-name">{{item.goods_name}}</view>
        <uni-icons type="arrowright" size="16"></uni-icons>
      </view>
    </view>
    <!-- 搜索历史 -->
    <view class="history-box" v-else>
      <!-- 标题区域 -->
      <view class="history-title">
        <text>搜索历史</text>
        <uni-icons type="trash" size="17" @click="cleanHistory"></uni-icons>
      </view>
      <!-- 列表区域 -->
      <view class="history-list">
        <uni-tag :text="item" v-for="(item, i) in historys" :key="i" @click="gotoGoodsList(item)"></uni-tag>
      </view>
    </view>
  </view>
</template>

<script>
  export default {
    data() {
      return {
        //延迟器timerId
        timer:null,
        kw:'',
        searchResults:[],
        historyList:['a', 'app','apple']
      };
    },
    methods:{
      input(e){
        clearTimeout(this.timer)
        this.timer = setTimeout(()=>{
          this.kw=e
          console.log(this.kw)
          this.getSearchList()
        },500)
      },
      async getSearchList(){
        if (this.kw===''){
          this.searchResults=[]
          return
        }
        const {data:res}=await uni.$http.get('/api/public/v1/goods/qsearch', {query:this.kw})
        if (res.meta.status!==200) return uni.$showMsg()
        this.searchResults=res.message
        this.saveSearchHistory()
      },
      saveSearchHistory(){
        const set = new Set(this.historyList)
        set.delete(this.kw)
        set.add(this.kw)
        this.historyList = Array.from(set)
        uni.setStorageSync('kw', JSON.stringify(this.historyList))
      },
      cleanHistory(){
        this.historyList=[]
        uni.setStorageSync('kw','[]')
      },
      gotoGoodsList(kw){
        uni.navigateTo({
          url:'/subpkg/goods_list/goods_list?query='+kw
        })
      }
    },
    computed:{
      historys(){
        return[...this.historyList].reverse()
      }
    },
    onLoad() {
      this.historyList=JSON.parse(uni.getStorageSync('kw') || '[]')
    }
  }
</script>

<style lang="scss">
.search-box{
  position: sticky;
  top:0;
  z-index: 999;
}
.sugg-list{
  padding: 0 5px;
  .sugg-item{
    font-size:12px;
    padding: 13px 0px;
    border: 1px solid #efefef;
    display: flex;
    align-items: center;
    justify-content: space-between;
  }
  .goods-name{
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-right: 3px;
  }
}
.history-box{
  padding:0 5px;
  .history-title{
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 40px;
    font-size: 13px;
    border-bottom: 1px solid #efefef;
  }
  .history-list{
    display: flex;
    flex-wrap: wrap;
    .uni-tag{
      margin-top: 5px;
      margin-right: 5px;
    }
  }
}
</style>
 